In the question given below, the sentence/part of the sentence is in bold. Five alternatives are given for the bold words. Choose the correct alternative that will improve the sentence or mark the option corresponding to it. Choose option 5 if no improvement is required.
The two roommates has been talking all night and later on, they went to bed in the morning.
1
had been talkative
2
had been talking
3
had being talked
4
have been talking
5
No improvement is required